Table A.1
Polynomial fitting coefficients for (BP-RP) - Teff relation.
| [Fe/H] ≥ - 0.25 | − 0.75 ≤ [Fe/H] < - 0.25 | − 1.5 ≤ [Fe/H] < - 0.75 | |
|---|---|---|---|
| a | − 1.26560115e+02 | − 1.10186911e+02 | − 8.33752340e+01 |
| b | + 5.51035166e+02 | + 4.81012003e+02 | + 3.67918027e+02 |
| c | − 8.97134410e+02 | − 7.84610828e+02 | − 6.06067325e+02 |
| d | + 6.49545820e+02 | + 5.68972189e+02 | + 4.44408270e+02 |
| e | − 1.75787123e+02 | − 1.54131155e+02 | − 1.21761773e+02 |
| f | + 7.75963128e-02 | − 9.98548177e-02 | + 2.56814399e-01 |
| g | − 3.64128996e-03 | − 2.94101629e-01 | + 2.44005287e-01 |
| h | − 3.44245462e-02 | − 1.87066718e-01 | + 7.81671154e-02 |
Notes. List of coefficients utilized to calibrate the effective temperature-Gaia (BP-RP) color relations on a sample of 927 dwarf stars. The case of [Fe/H] < −1.5 is treated as if [Fe/H] = −1.5. These values are valid only for stars with 5000 ≤ Teff/K ≤ 6500. In the case of Teff < 5000 K or Teff > 6500 K the polynomial function depends only on effective temperature and assume the following form: BC = −33.869 + 0.03497 × x - 1.295e - 05 × x2 + 2.2885e − 09 × x3 − 1.9641e − 13 × x4 + 6.5913e − 18 × x5
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